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Finding the Fourth Proportional to 242,704.60, 363,959.70 and 84,851.80

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Solution

The fourth proportional to 242,704.60, 363,959.70 and 84,851.80 is: 127,243.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,704.60 : 363,959.70 = 84,851.80 : x
  2. Step 2: Convert to fraction form
    242,704.60/363,959.70 = 84,851.80/x
  3. Step 3: Cross multiply
    242,704.60x = 363,959.70 × 84,851.80
  4. Step 4: Simplify right side
    242,704.60x = 30,882,635,672.46
  5. Step 5: Solve for x
    x = 30,882,635,672.46/242,704.60
  6. Step 6: Final answer
    x = 127,243.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.